Daniel Urban created KAFKA-17828:
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Summary: Reverse Checkpointing in MirrorMaker2
Key: KAFKA-17828
URL: https://issues.apache.org/jira/browse/KAFKA-17828
Project: Kafka
Issue Type: Improvement
Components: mirrormaker
Reporter: Daniel Urban
Assignee: Daniel Urban
MM2 supports checkpointing - replicating the committed offsets of groups across
Kafka clusters.
This is a one-way replication, meaning that consumers can rely on this when
they fail over from the upstream cluster to the downstream cluster. But
checkpointing would be desirable in failbacks, too: if the consumers processed
messages from the downstream topic, they do not want to consume the same
messages again in the upstream topic.
To avoid this, checkpointing should also support reverse checkpointing in the
context of a bidirectional replication: creating checkpoints between
downstream->upstream topics.
This ticket implements KIP-1098.
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